【发布时间】：2021-05-28 13:30:55
【问题描述】：
我正在尝试使用android-bridge-app 将integrate the DJI SDK android 移动到我的项目中。
因此，我在遥控器（通过 USB 电缆与我的笔记本电脑连接）内运行 bridgeApp，并使用模拟器运行 DJI 移动 SDK。问题是当我打开 DJI 移动应用程序时，它会崩溃并显示UnsatisfiedLinkError。
模拟器运行在X86_64的系统镜像上（不是普通的X86镜像，不兼容DJI SDK，需要arm设备）
有人知道如何解决这个错误吗？
错误日志：
V/sdk: DexInstall beging
installSecondarDexs
W/e.myapplicatio: Accessing hidden field Ldalvik/system/BaseDexClassLoader;->pathList:Ldalvik/system/DexPathList; (greylist, reflection, allowed)
E/e.myapplicatio: No implementation found for java.lang.Object[] com.secneo.sdk.Helper.makeInMemoryDexElements(java.lang.Object, java.util.List, java.lang.String) (tried Java_com_secneo_sdk_Helper_makeInMemoryDexElements and Java_com_secneo_sdk_Helper_makeInMemoryDexElements__Ljava_lang_Object_2Ljava_util_List_2Ljava_lang_String_2)
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.myapplication, PID: 12713
java.lang.UnsatisfiedLinkError: No implementation found for java.lang.Object[] com.secneo.sdk.Helper.makeInMemoryDexElements(java.lang.Object, java.util.List, java.lang.String) (tried Java_com_secneo_sdk_Helper_makeInMemoryDexElements and Java_com_secneo_sdk_Helper_makeInMemoryDexElements__Ljava_lang_Object_2Ljava_util_List_2Ljava_lang_String_2)
at com.secneo.sdk.Helper.makeInMemoryDexElements(Native Method)
at com.secneo.sdk.DexInstall.V26install(DexInstall.java:139)
at com.secneo.sdk.DexInstall.installSecondaryDexes(DexInstall.java:71)
at com.secneo.sdk.DexInstall.install(DexInstall.java:40)
at com.secneo.sdk.Helper.install(Helper.java:43)
at com.example.androiddrone.MApplication.attachBaseContext(MApplication.java:13)
at android.app.Application.attach(Application.java:351)
at android.app.Instrumentation.newApplication(Instrumentation.java:1159)
at android.app.LoadedApk.makeApplication(LoadedApk.java:1236)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6683)
at android.app.ActivityThread.access$1300(ActivityThread.java:237)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1913)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:223)
at android.app.ActivityThread.main(ActivityThread.java:7656)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
I/Process: Sending signal. PID: 12713 SIG: 9
错误似乎发生在 DJI SDK 端Helper.install(MApplication.this)
package com.example.androiddrone;
import android.app.Application;
import android.content.Context;
import com.secneo.sdk.Helper;
public class MApplication extends Application {
private DemoApplication demoApplication;
@Override
protected void attachBaseContext(Context paramContext) {
super.attachBaseContext(paramContext);
Helper.install(MApplication.this);
if (demoApplication == null) {
demoApplication = new DemoApplication();
demoApplication.setContext(this);
}
}
@Override
public void onCreate() {
super.onCreate();
demoApplication.onCreate();
}
}
主活动：
package com.example.androiddrone;
import android.Manifest;
import android.content.pm.PackageManager;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.content.Intent;
import android.os.Handler;
import android.os.Looper;
import android.util.Log;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.atomic.AtomicBoolean;
import dji.common.error.DJIError;
import dji.common.error.DJISDKError;
import dji.sdk.base.BaseComponent;
import dji.sdk.base.BaseProduct;
import dji.sdk.sdkmanager.DJISDKInitEvent;
import dji.sdk.sdkmanager.DJISDKManager;
public class MainActivity extends AppCompatActivity {
private static final String TAG = MainActivity.class.getName();
public static final String FLAG_CONNECTION_CHANGE = "dji_sdk_connection_change";
private static BaseProduct mProduct;
private Handler mHandler;
private static final String IP = "192.168.42.8";
private static final String[] REQUIRED_PERMISSION_LIST = new String[]{
Manifest.permission.VIBRATE,
Manifest.permission.INTERNET,
Manifest.permission.ACCESS_WIFI_STATE,
Manifest.permission.WAKE_LOCK,
Manifest.permission.ACCESS_COARSE_LOCATION,
Manifest.permission.ACCESS_NETWORK_STATE,
Manifest.permission.ACCESS_FINE_LOCATION,
Manifest.permission.CHANGE_WIFI_STATE,
Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.BLUETOOTH,
Manifest.permission.BLUETOOTH_ADMIN,
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.READ_PHONE_STATE,
};
private List<String> missingPermission = new ArrayList<>();
private AtomicBoolean isRegistrationInProgress = new AtomicBoolean(false);
private static final int REQUEST_PERMISSION_CODE = 12345;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// When the compile and target version is higher than 22, please request the following permission at runtime to ensure the SDK works well.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
checkAndRequestPermissions();
}
setContentView(R.layout.activity_main);
//Initialize DJI SDK Manager
mHandler = new Handler(Looper.getMainLooper());
}
/**
* Checks if there is any missing permissions, and
* requests runtime permission if needed.
*/
private void checkAndRequestPermissions() {
// Check for permissions
for (String eachPermission : REQUIRED_PERMISSION_LIST) {
if (ContextCompat.checkSelfPermission(this, eachPermission) != PackageManager.PERMISSION_GRANTED) {
missingPermission.add(eachPermission);
}
}
// Request for missing permissions
if (missingPermission.isEmpty()) {
startSDKRegistration();
} else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
showToast("Need to grant the permissions!");
ActivityCompat.requestPermissions(this,
missingPermission.toArray(new String[missingPermission.size()]),
REQUEST_PERMISSION_CODE);
}
}
/**
* Result of runtime permission request
*/
@Override
public void onRequestPermissionsResult(int requestCode,
@NonNull String[] permissions,
@NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
// Check for granted permission and remove from missing list
if (requestCode == REQUEST_PERMISSION_CODE) {
for (int i = grantResults.length - 1; i >= 0; i--) {
if (grantResults[i] == PackageManager.PERMISSION_GRANTED) {
missingPermission.remove(permissions[i]);
}
}
}
// If there is enough permission, we will start the registration
if (missingPermission.isEmpty()) {
startSDKRegistration();
} else {
showToast("Missing permissions!!!");
}
}
private void startSDKRegistration() {
if (isRegistrationInProgress.compareAndSet(false, true)) {
AsyncTask.execute(new Runnable() {
@Override
public void run() {
showToast("registering, pls wait...");
DJISDKManager.getInstance().registerApp(MainActivity.this.getApplicationContext(), new DJISDKManager.SDKManagerCallback() {
@Override
public void onRegister(DJIError djiError) {
if (djiError == DJISDKError.REGISTRATION_SUCCESS) {
showToast("Register Success");
DJISDKManager.getInstance().startConnectionToProduct();
DJISDKManager.getInstance().enableBridgeModeWithBridgeAppIP(IP);
} else {
showToast("Register sdk fails, please check the bundle id and network connection!");
}
Log.v(TAG, djiError.getDescription());
}
@Override
public void onProductDisconnect() {
Log.d(TAG, "onProductDisconnect");
showToast("Product Disconnected");
notifyStatusChange();
}
@Override
public void onProductConnect(BaseProduct baseProduct) {
Log.d(TAG, String.format("onProductConnect newProduct:%s", baseProduct));
showToast("Product Connected");
notifyStatusChange();
}
public void onProductChanged(BaseProduct baseProduct) {
}
@Override
public void onComponentChange(BaseProduct.ComponentKey componentKey, BaseComponent oldComponent,
BaseComponent newComponent) {
if (newComponent != null) {
newComponent.setComponentListener(new BaseComponent.ComponentListener() {
@Override
public void onConnectivityChange(boolean isConnected) {
Log.d(TAG, "onComponentConnectivityChanged: " + isConnected);
notifyStatusChange();
}
});
}
Log.d(TAG,
String.format("onComponentChange key:%s, oldComponent:%s, newComponent:%s",
componentKey,
oldComponent,
newComponent));
}
@Override
public void onInitProcess(DJISDKInitEvent djisdkInitEvent, int i) {
}
@Override
public void onDatabaseDownloadProgress(long l, long l1) {
}
});
}
});
}
}
private void notifyStatusChange() {
mHandler.removeCallbacks(updateRunnable);
mHandler.postDelayed(updateRunnable, 500);
}
private Runnable updateRunnable = new Runnable() {
@Override
public void run() {
Intent intent = new Intent(FLAG_CONNECTION_CHANGE);
sendBroadcast(intent);
}
};
private void showToast(final String toastMsg) {
Handler handler = new Handler(Looper.getMainLooper());
handler.post(new Runnable() {
@Override
public void run() {
Toast.makeText(getApplicationContext(), toastMsg, Toast.LENGTH_LONG).show();
}
});
}
}
演示应用：
package com.example.androiddrone;
import android.app.Application;
import android.content.Context;
import android.content.Intent;
import android.os.Build;
import android.os.Handler;
import android.os.Looper;
import android.util.Log;
import android.widget.Toast;
import androidx.core.content.ContextCompat;
import dji.common.error.DJIError;
import dji.common.error.DJISDKError;
import dji.common.useraccount.UserAccountState;
import dji.common.util.CommonCallbacks;
import dji.sdk.base.BaseComponent;
import dji.sdk.base.BaseProduct;
import dji.sdk.sdkmanager.DJISDKInitEvent;
import dji.sdk.sdkmanager.DJISDKManager;
import dji.sdk.useraccount.UserAccountManager;
public class DemoApplication extends Application {
public static final String FLAG_CONNECTION_CHANGE = "uxsdk_demo_connection_change";
private static BaseProduct mProduct;
private Handler mHandler;
private DJISDKManager.SDKManagerCallback mDJISDKManagerCallback;
private Application instance;
public void setContext(Application application) {
instance = application;
}
@Override
public Context getApplicationContext() {
return instance;
}
public DemoApplication() {
}
/**
* This function is used to get the instance of DJIBaseProduct.
* If no product is connected, it returns null.
*/
public static synchronized BaseProduct getProductInstance() {
if (null == mProduct) {
mProduct = DJISDKManager.getInstance().getProduct();
}
return mProduct;
}
@Override
public void onCreate() {
super.onCreate();
mHandler = new Handler(Looper.getMainLooper());
//Check the permissions before registering the application for android system 6.0 above.
int permissionCheck = ContextCompat.checkSelfPermission(getApplicationContext(), android.Manifest.permission.WRITE_EXTERNAL_STORAGE);
int permissionCheck2 = ContextCompat.checkSelfPermission(getApplicationContext(), android.Manifest.permission.READ_PHONE_STATE);
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M || (permissionCheck == 0 && permissionCheck2 == 0)) {
//This is used to start SDK services and initiate SDK.
DJISDKManager.getInstance().registerApp(getApplicationContext(), mDJISDKManagerCallback);
} else {
Toast.makeText(getApplicationContext(), "Please check if the permission is granted.", Toast.LENGTH_LONG).show();
}
/**
* When starting SDK services, an instance of interface DJISDKManager.DJISDKManagerCallback will be used to listen to
* the SDK Registration result and the product changing.
*/
mDJISDKManagerCallback = new DJISDKManager.SDKManagerCallback() {
//Listens to the SDK registration result
@Override
public void onRegister(DJIError error) {
if(error == DJISDKError.REGISTRATION_SUCCESS) {
DJISDKManager.getInstance().startConnectionToProduct();
Handler handler = new Handler(Looper.getMainLooper());
handler.post(new Runnable() {
@Override
public void run() {
Toast.makeText(getApplicationContext(), "Register Success", Toast.LENGTH_LONG).show();
}
});
loginAccount();
} else {
Handler handler = new Handler(Looper.getMainLooper());
handler.post(new Runnable() {
@Override
public void run() {
Toast.makeText(getApplicationContext(), "Register Failed, check network is available", Toast.LENGTH_LONG).show();
}
});
}
Log.e("TAG", error.toString());
}
@Override
public void onProductDisconnect() {
Log.d("TAG", "onProductDisconnect");
notifyStatusChange();
}
@Override
public void onProductConnect(BaseProduct baseProduct) {
Log.d("TAG", String.format("onProductConnect newProduct:%s", baseProduct));
notifyStatusChange();
}
public void onProductChanged(BaseProduct baseProduct) {
Log.d("TAG", String.format("onProductChanged newProduct:%s", baseProduct));
notifyStatusChange();
}
@Override
public void onComponentChange(BaseProduct.ComponentKey componentKey, BaseComponent oldComponent,
BaseComponent newComponent) {
if (newComponent != null) {
newComponent.setComponentListener(new BaseComponent.ComponentListener() {
@Override
public void onConnectivityChange(boolean isConnected) {
Log.d("TAG", "onComponentConnectivityChanged: " + isConnected);
notifyStatusChange();
}
});
}
Log.d("TAG",
String.format("onComponentChange key:%s, oldComponent:%s, newComponent:%s",
componentKey,
oldComponent,
newComponent));
}
@Override
public void onInitProcess(DJISDKInitEvent djisdkInitEvent, int i) {
}
@Override
public void onDatabaseDownloadProgress(long l, long l1) {
}
};
}
private void loginAccount(){
UserAccountManager.getInstance().logIntoDJIUserAccount(this,
new CommonCallbacks.CompletionCallbackWith<UserAccountState>() {
@Override
public void onSuccess(final UserAccountState userAccountState) {
Log.e("TAG", "Login Success");
}
@Override
public void onFailure(DJIError error) {
Log.e("TAG", "Login Error:" + error.getDescription());
}
});
}
private void notifyStatusChange() {
mHandler.removeCallbacks(updateRunnable);
mHandler.postDelayed(updateRunnable, 500);
}
private Runnable updateRunnable = new Runnable() {
@Override
public void run() {
Intent intent = new Intent(FLAG_CONNECTION_CHANGE);
getApplicationContext().sendBroadcast(intent);
}
};
}
gradle(app):
plugins {
id 'com.android.application'
}
android {
compileSdkVersion 30
buildToolsVersion "30.0.3"
defaultConfig {
applicationId "com.example.myapplication"
minSdkVersion 19
targetSdkVersion 30
versionCode 1
versionName "1.0"
multiDexEnabled true
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
packagingOptions{
doNotStrip "*/*/libdjivideo.so"
doNotStrip "*/*/libSDKRelativeJNI.so"
doNotStrip "*/*/libFlyForbid.so"
doNotStrip "*/*/libduml_vision_bokeh.so"
doNotStrip "*/*/libyuv2.so"
doNotStrip "*/*/libGroudStation.so"
doNotStrip "*/*/libFRCorkscrew.so"
doNotStrip "*/*/libUpgradeVerify.so"
doNotStrip "*/*/libFR.so"
doNotStrip "*/*/libDJIFlySafeCore.so"
doNotStrip "*/*/libdjifs_jni.so"
doNotStrip "*/*/libsfjni.so"
exclude 'META-INF/rxjava.properties'
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
}
dependencies {
implementation 'androidx.appcompat:appcompat:1.2.0'
implementation 'com.google.android.material:material:1.2.1'
implementation 'androidx.constraintlayout:constraintlayout:2.0.1'
implementation 'com.android.support:multidex:1.0.3'
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.2'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
implementation ('com.dji:dji-uxsdk:4.11')
compileOnly ('com.dji:dji-sdk-provided:4.11')
}
【问题讨论】：
标签： java android android-library dji-sdk